Cutting device.



J.F.CLARK,

M cunme DEVICE-r APPLICATION FILED APR. 12, 1915- 1,1(3ELE57W3.

Patented Jan'.4,1916.

COLUMBIA PLANUGRAPH co., WASHINGTON. D. c.

UN trap srnrns PAT NT- 3m JOSIAH FRANKLIN CLARK; oFnEr'UBLIc,i?nNNsYLvANIA.

- CUTTING DEVICE.

To all whom it may concern:

Beit known that I, JosIAH F. CLARK, a citizen of the United States,residing at Republic, in the county of Fayette and State ofPennsylvania, have invented certain new andv useful Improvements inCutting Devices, of which the following is a specificas .tion, referencebeing had to the accompanying drawings.

This invention relates to certain improvements in cutting devices andhas relation more particularly to a device of this general characterespecially designed and adapted for use in connection with slate or thelike;

construction and in the combination and 'arrangement of the severalparts of my improved cutting devlce whereby certain 1mportant advantagesare attainedand ,thedevice is rendered simpler. less expensive andotherwise more convenient and advantageous for'use, all as will behereinafter more fullv set forth.

The novel featuresof the invention will be carefully defined in theappended claims.

In order that my invention may be the better understood, I willnowproceed to describe the same with reference to the accompanyingdrawings, wherein Figure 1 is a view in side elevation. of a cuttingdevice constructed inaccordance with an embodiment of my invention, witha portion broken awav; Fig. 2 is a sectional.

view taken substantially on the line 2,2 of Fig. 1; and Fig. 3 is afragmentary view, partly in end elevation and partly in section, of mydevice as herein set forth.

As disclosed in the accompanying drawings. 11 denote two elongated jawsof predetermined dimensions and preferably formed of angle iron and,maintained in requisite spaced relation-through the med um f he b oc s2 an 3 inte p Specification of Letters Patent.

tween adjacent extremities of the jaws and maintained in appliedpositionthrough the medium of conventional members 4. The

block 3 projects beyond the work supporting flanges a of the jaws and ispreferably disposed onan inward curve and has pivotally secured to itsfree extremity the laterally curved arm 5 secured to" an extremity ofthe elongated cutter blade 6, herein disclosed as-longitudinally curved,for apurpose which is believed to be self-evident, and as is believed tobe clearly; shown in the accompanying drawings, the blade 6 is adaptedto extend between the jaws 1-1. The working edge of the blade is hollowground to afford two cutting edges while the side faces of said bladeare disposed in planes converging from the working edge so that aclearance of one-eighth of an inch is assured as it passes thr'oughthework. It will'be further observed that the arm 5 permits a shearingaction on the work whereby the dcutting operation is ma terially facilitate tially Ll-shape in form, and having the free extremities. of. itsstem pivotally engaged withthe upstanding brackets 8 carried by themembers 1 adjacent the block 2, and it is to be observed that theopposed faces of 'the outstanding portions of said brackets overlie thespace between the members 1 whereby it is assured that the blade 6 willnot contact with said members.

It is also to be observed that the brackets 8 are of such whensaid knifeisat the limit of its inward Patented Jan. 4, 1916. Application filedApril 12, 1915. Serial No. 20,920. v

a length'as to extend beyond the knife 6 when in compacted adjustment.It will also be readilyperceived that the yoke 7 when in folded positionserves to prevent movement of the blades 6 aboutits pivot as said yokemay be locked in the position indicated by dotted lines in Fig. 1. Inthe present embodiment ofmy invention, the pivotal connection betweenthe stems of the yoke 7 and the brackets 8 is afforded through themedium of the headed. members 9 having coacting therewith the wingednuts 10 whereby 7 7 so In order to hold the knife 6 against lateral itwill be readily perceived that the guiding yoke may be eliectivelymaintained in operative position or, when desired, may be foldedinwardly of the members 1 so that the device may be compacted to occupya minimum of space when not in use. The flanges b of the members 1 arepreferably gradually increased in width fromtheir ex.- tremities towardthe centers thereof so that the members 1 will be materiallystrengthened and I also find it desirable to have the "free marginalportions of said flanges b at their longitudinal centers tied orconnected by the interposed block 11 suitably secured thereto by theconventional retaining means 12. V

Five-tally supported between the flanges I) at the'opposite extremitiesof the jaws are the supporting members 1% having their outer or freeextremities pointed so that they may be readily engaged with asupporting surface. As herein embodied, the pivotal connection betweenthe supporting members 14; and the flanges 7) is afforded by the headedmembers 15 passing through said flanges b and the members 14 and havingenacting therewith the winged nuts 16 whereby it will be perceived thatsaid supporting members may be effectively clamped in proper adjustmentrel ative to the jaws 1 or may be folded fiithinthe space between saidavvs when the device is not in use so that the same may be readily andconveniently placed within a suitable carrying case when it is desiredto transport the same. I

' lFi-om the foregoing description, it is thought to be obvious that acutting device constructed in accordance with my invention is of anextremely simple and comparatively inexpensive nature and isparticularly A well adapted for use by reason of the convenience andfacility with Which it may be assembled, and it will also be obviousthat my invention is susceptible of some change and modification withoutmaterial departure from the principles and spirit thereof and for thisreason ll do not wish to be understood as limiting myself to the precisearrangement and formation of the several parts herein shown in carryingout my invention in practice.

I claim:

1. A device of the class described comprising spaced eiongated jaws, acutting blade pivotally supported by said jaws, a guiding yoke pivotallyengagedwith the jaws and through which the cutting blade projects, andmeans for locking said yoke against pivotal movement, said yoke when atthe limit of its inward movement serving to hold the cutting bladeagainst pivotal movement.

2. A device of the character described comprising spaced elongated jaws,a cutting blade in pivotal engagement with said aws, brackets projectingupwardly from the jaws, a yoke pivotally engaged with the brackets andthrough which the cutting blade extends, said brackets being of: alength to overlie the cutting blade when at the limit of its in ardmovement, and means "for looking the yoke against pivotal movement.

In testimony whereof I hereunto aliiX my signature in the presenceof twowitnesses.

JOSIAH FRANKLIN CLARK.

Witnesses:

Louis GAGGIANI, PAUL TOSSANE.

iopies of this patent may be obtained for five cents each, byaddressing"v the Commissioner of Patents, Washington, 1). 0.

